package com.fwmagic.netty;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;


public class TimeServer {

	public static void main(String[] args) throws Exception {
		int port = 9999;
		if (args != null && args.length > 0) {
			try {
				port = Integer.valueOf(args[0]);
			} catch (NumberFormatException e) {
				e.printStackTrace();
			}
		}
		new TimeServer().bind(port);
	}

	public void bind(int port) throws Exception {
		// 配置服务端的NIO线程组,一个用于服务端接收客户端的链接，一个用于进行SocketChannel的网络读写
		EventLoopGroup bossGroup = new NioEventLoopGroup();
		EventLoopGroup workerGroup = new NioEventLoopGroup();
		try {
			//启动NIO服务端的辅助启动类
			ServerBootstrap b = new ServerBootstrap();
			b.group(bossGroup, workerGroup)
					.channel(NioServerSocketChannel.class)//设置nio服务端通道
					.option(ChannelOption.SO_BACKLOG, 1024)//设置缓冲大小为1MB
					.childHandler(new ChildChannelHandler());//绑定I/O事件处理类
			//绑定端口，同步等待成功
			ChannelFuture f = b.bind(port).sync();
			
			//等待服务端监听端口关闭
			f.channel().closeFuture().sync();
		} finally{
			//优雅退出，释放线程池资源
			bossGroup.shutdownGracefully();
			workerGroup.shutdownGracefully();
		}
	}
	
	private class ChildChannelHandler extends ChannelInitializer<SocketChannel>{

		@Override
		protected void initChannel(SocketChannel socketChannel) throws Exception {
			socketChannel.pipeline().addLast(new TimeServerHandler());
		}

		

	}
}
